472 Three-dimensioned Truss. Case II. Nut at E.—R is the first diagram and S the second giving stresses in Ax B = 92 tons, and in a b and a c each = 47 tons. Case III, is worked entirely from the end view. 100 tons is to, be distributed on the fore legs, causing no stress in the hack leg. Then by diagram T, stresses are in a b and ac each — 51 tons.